2807978628 has 48 divisors (see below), whose sum is σ = 8063941760. Its totient is φ = 740565504.

The previous prime is 2807978617. The next prime is 2807978629. The reversal of 2807978628 is 8268797082.

2807978628 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (2807978629) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1284613 + ... + 1286796.

Almost surely, 2^2807978628 is an apocalyptic number.

2807978628 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

2807978628 is an abundant number, since it is smaller than the sum of its proper divisors (5255963132).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2807978628 is a wasteful number, since it uses less digits than its factorization.

2807978628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2571436 (or 2571434 counting only the distinct ones).

The product of its (nonzero) digits is 5419008, while the sum is 57.

The square root of 2807978628 is about 52990.3635390436. The cubic root of 2807978628 is about 1410.7972333695.

The spelling of 2807978628 in words is "two billion, eight hundred seven million, nine hundred seventy-eight thousand, six hundred twenty-eight".